CVE-2026-123500: Permission Flaw (CVSS 6.2)

Description

Vikunja before 2.7.1 contains an insecure file permissions vulnerability that allows local users to read dump archives created with umask permissions by the vikunja dump command. Local attackers on a shared host can read the world-readable zip in the rootpath to obtain config, password hashes, TOTP secrets, tokens, and stored files.

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CVSS v3.1 Score

6.2

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0012

Probability of exploitation

0.02%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-276 Incorrect Default Permissions

References

Other References

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-rp64-xg8g-9mpr https://www.vulncheck.com/advisories/vikunja-before-2.7.1-insecure-permissions-on-dump-archive-via-vikunja-dump

Frequently Asked Questions

What is CVE-2026-123500? +

Vikunja before 2.7.1 contains an insecure file permissions vulnerability that allows local users to read dump archives created with umask permissions by the vikunja dump command. Local attackers on a shared host can read the world-readable zip in the rootpath to obtain config, password hashes, TOTP secrets, tokens, and stored files. It has a CVSS v3.1 base score of 6.2 (MEDIUM).

How severe is CVE-2026-123500? +

CVE-2026-123500 has a CVSS v3.1 score of 6.2 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0012, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-123500? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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